A Houston Astros fans holds up an American League Wild Card Game ticket before the American League Division Series Game 3 against the Kansas City Royals at Minute Maid Park on Sunday, Oct. 11, 2015, in Houston. ( Karen Warren / Houston Chronicle ) less

A Houston Astros fans holds up an American League Wild Card Game ticket before the American League Division Series Game 3 against the Kansas City Royals at Minute Maid Park on Sunday, Oct. 11, 2015, in Houston. ... more

Houston Astros Coordinator, Creative Production, Larry Provitt, works on getting the new ALCS signage up in the dugouts during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS. less

Houston Astros Coordinator, Creative Production, Larry Provitt, works on getting the new ALCS signage up in the dugouts during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 ... more

Photo: Karen Warren, Houston Chronicle

Image 5 of 27

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS speaks to the media at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS speaks to the media at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Photo: Karen Warren, Houston Chronicle

Image 6 of 27

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS speaks to the media at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS speaks to the media at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS walks back to the clubhouse during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS walks back to the clubhouse during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Photo: Karen Warren, Houston Chronicle

Image 9 of 27

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS walks back to the clubhouse during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS walks back to the clubhouse during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Photo: Karen Warren, Houston Chronicle

Image 10 of 27

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS walks back to the clubhouse during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS walks back to the clubhouse during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Photo: Karen Warren, Houston Chronicle

Image 11 of 27

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS chats with first base coach Rich Dauer during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS. less

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS chats with first base coach Rich Dauer during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 ... more

Photo: Karen Warren, Houston Chronicle

Image 12 of 27

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

Houston Astros Dallas Keuchel the starting pitcher for the Game 1 of the ALCS during workouts at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

New York Yankees pitcher Masahiro Tanaka warms up during the Yankees workout, was named the starter for Game 1 of the ALCS at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS. ( Karen Warren / Houston Chronicle )

New York Yankees pitcher Masahiro Tanaka warms up during the Yankees workout, was named the starter for Game 1 of the ALCS at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

New York Yankees pitcher Masahiro Tanaka warms up during the Yankees workout, was named the starter for Game 1 of the ALCS at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS. ( Karen Warren / Houston Chronicle )

New York Yankees pitcher Masahiro Tanaka warms up during the Yankees workout, was named the starter for Game 1 of the ALCS at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS.

New York Yankees pitcher Masahiro Tanaka walks across the infield during the Yankees workout, was named the starter for Game 1 of the ALCS at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of Game 1 of the ALCS. ( Karen Warren / Houston Chronicle )

New York Yankees pitcher Masahiro Tanaka walks across the infield during the Yankees workout, was named the starter for Game 1 of the ALCS at Minute Maid Park, Thursday, Oct. 12, 2017, in Houston , ahead of

Astros fans waiting on last-minute deals to secure tickets for the American League Championship Series may have waited a day too long.

The Yankees’ Game 5 win over the Indians in the American League Division Series on Wednesday night produced an immediate spike for Game 1 and 2 tickets at Minute Maid Park, said a spokesman for the online ticket brokerage SeatGeek.com.

The median ticket price for Game 1 increased by 47 percent overnight, and Game 2 prices went up by 43 percent on SeatGeek. Prices for Games 6 and 7, if necessary, also went up by 31 percent and 13 percent, respectively.

The median listing price as of midday Thursday was $362 for Game 1 and $363 for Game 2.

SeatGeek spokesman Chris Leyden said several thousand tickets are available across the stadium but that website officials noted what he described as a huge buying surge after the Yankees-Indians game ended. He attributed that to the attraction of the Yankees plus the certainty of knowing that the first two games of the series would be played in Houston.

The Astros are sold out for Games 1 and 2, including about 2,000 standing-room tickets per game. Some tickets remain for Games 6 and 7, if necessary.

StubHub.com spokesperson Cameron Papp said about 3,500 tickets for Game 1 and about 4,000 for Game 2 were available on that site as of midafternoon Thursday.

"The Yankees are always a big draw and the Astros are on a great run, so there's a lot of excitement in the Houston area for this series." Papp said in an email. " The opponent is certainly a factor, but Houston fans will be excited to attend an ALCS game regardless.

Papp said visits to StubHub's event page for Game 1 jumped 94 percent Wednesday from Tuesday's levels, and average ticket prices sold on StubHub moved up by 7 percent to $244.

At VividSeats.com, a few upper deck seats remained available for under $150, climbing into the $450 range and up for field level seats behind the Diamond Club and starting at $375 and up behind the Astros dugout.

Among local brokers, Jim Barr with Ticket Attractions said the combination of a weekend series and the Yankees spurred interest among local buyers. He said upper deck and standing room tickets were available starting at about $150 with an average price of about $250 to $300.

At Houston Ticket Store in Midtown, spokesman Bo Banks said tickets were "selling like madness right now." He estimated a 25 percent price hike because of the Yankees' presence.

At Houston Ticket Brokers in the Vintage Park area, owner Malcolm Robinson also estimated that the combination of the Yankees and the weekend dates contributed to about a 25 percent increase in demand. He said his average price was in the $200 range for Game 1.